The free version of PDF-XChange Viewer PRO, PDF-XChange Viewer offers a host of PDF viewing and editing tools, all in a fast, lightweight package. Mark up pages with text comments and objects by typing directly into a PDF, apply custom stamps, extract text from a PDF, export to formats like BMP, JPEG, TIFF, PNG, and more. You can even fill out and save Adobe forms, or email a PDF directly from the viewer.